本程序利用奇异值分解对3通道彩色图像进行压缩分解，具体步骤如下： 压缩过程： 1. 选取子图像大小K值，把图像分解成M×M个子图像，IMG(s),s=1,2,…, M2，其中M=N/K，原始图像IMG大小为N×N。 2. 计算这M2个子图像的平均值average，对每幅子图像减去均值图像得到新图像。 3. 计算相关矩阵R，其元素定义为 。 4. 计算R的特征值与特征向量，计算每幅子图像与最大特征向量的内积，便得到编码，即压缩后的图像。
上传时间： 2013-12-23
上传用户：chenxichenyue
Simple VaR Calculator provides: - Evaluation of return distribution of single asset or portfolio of assets - Volatility forecasts using moving average and exponential algorithm - Value at Risk of single asset or portfolio measurement using parametric and historical simulation. - Historical data can be obtained from simple text file or MS Excel using Matlab Excel Links.
标签： distribution Calculator Evaluation portfolio
上传时间： 2013-12-21
上传用户：hasan2015
A collection of LDPC(Low-Density Parity-Codes) tools. Including: Code construction Density Evolution Decoding Algorithm Girth average Counter Stopping set and error Floor,etc
标签： Parity-Codes construction Low-Density collection
上传时间： 2016-05-10
上传用户：liglechongchong
求时间序列互信息的程序，英文为average mutual information，适合与混沌时间序列分析．
上传时间： 2016-06-05
上传用户：yan2267246
1．产生白噪声程序 编程产生一组正态分布的白噪声信号,它的均值和方差以及长度可随意调整。将产生的白噪声信号存入数据文件。 本程序算法用C++语言编写。首先用乘同余法产生均匀分布白噪声，再用变换抽样法转换为高斯分布白噪声。算法及程序实现叙述如下。 1) 设定x初值为11,A＝179，长度WNlength,均值Average,方差Serror为用户输入的变量； 2) M =235，ζi= x/M； 3) 取ζi的小数部分再赋值给ζi＋1，这就是均匀分布白噪声； 4) 利用公式 η1=Serror×(–2*logζ1)0.5×cos(2pζ2) ＋Average η2= Serror×(–2*logζ1)0.5×sin(2pζ2) +Average 计算得到均值和方差可任意调整的白噪声序列。式中 为均匀分布白噪声。
上传时间： 2016-10-19
上传用户：hanli8870
ClustanGraphics聚类分析工具。提供了11种聚类算法。 Single Linkage (or Minimum Method, Nearest Neighbor) Complete Linkage (or Maximum Method, Furthest Neighbor) Average Linkage (UPGMA) Weighted Average Linkage (WPGMA) Mean Proximity Centroid (UPGMC) Median (WPGMC) Increase in Sum of Squares (Ward s Method) Sum of Squares Flexible (ß space distortion parameter) Density (or k-linkage, density-seeking mode analysis)
标签： ClustanGraphics Complete Neighbor Linkage
上传时间： 2014-01-02
上传用户：003030
Produce Java classes to calculate and display the Poisson probability when input the value of the average (A) arrival rate of customers at some business in the range of 1 to 10. The error message will output when A is out of the range。
标签： the probability calculate Produce
上传时间： 2014-01-10
上传用户：moerwang
zlibyou can found an optimized version of Zlib 1.1.4 that you can embed into every Delphi executable without use external dlls. Further I have build a little example hoping to aid "young" Delphi programmers getting in trouble with streams... Please let me know if you ll discover errors. These objects and sources are targeted for executing into P6+ CPU core, and Delphi5-6-7-x software. Benchmarks show this zlib 40％ average faster than native DLL distribution and 100％ reliable.
标签： executable can optimized zlibyou
上传时间： 2016-12-19
上传用户：lili123
full wave rectifierDuring the period from 伪 to 蟺, the input voltage vs input current is are positive and the power flows from supply to the load. The converter is said to be operated at rectification mode .During the period from 蟺 to 蟺+伪 , the input voltage vs is negative and the input current is is positive and reverse power flows from load to the supply. The converter is said to be operated in inversion mode. Depending on the value of 伪, average output voltage can be either positive or negative and hence provides 2 quadrant operation.
标签： input rectifierDuring the positive
上传时间： 2017-04-10
上传用户：alan-ee
Java has become a confusing world. Five years ago, there were few decisions to make once you started programming in Java—you used AWT for graphical user interfaces, sockets for network programming, and hacked together everything else you needed. Since then, though, the APIs available for the Java language have grown, and grown. . . and grown. Now you can dabble in Swing, servlets, Enterprise JavaBeans (EJB), JavaMail, and more. Additionally, there are now packages of APIs, like the Java 2 Micro Edition (J2ME) and Java 2 Enterprise Edition (J2EE). While these packages seem to be nicely wrapped bundles of useful APIs, they don t help the average developer figure out how to piece together the APIs contained in these packages. Though it s simple to find documentation on the individual APIs, getting the "big picture" is difficult, at best. One of the most interesting, but difficult, aspects of Java today is building Java enterprise applications using the J2EE package.
标签： confusing decisions become world
上传时间： 2013-12-30
上传用户：haoxiyizhong
